Prototype pollution attack when using _.zipObjectDeep in lodash before 4.17.20.
CVE-2020-8203
This high-severity CVE scores 7.4 under NVD CVSS v3. EPSS exploit probability: 2.5%, top 14% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.4
- EG Score
- 7.4(medium)
- EPSS
- 91.5%
- KEV
- Not listed
Published
July 15, 2020
Last Modified
November 21, 2024
References (16)
- support@hackeronehttps://github.com/lodash/lodash/issues/4874
- support@hackeronehttps://hackerone.com/reports/712065
- support@hackeronehttps://security.netapp.com/advisory/ntap-20200724-0006/
- support@hackeronehttps://www.oracle.com//security-alerts/cpujul2021.html
- support@hackeronehttps://www.oracle.com/security-alerts/cpuApr2021.html
- support@hackeronehttps://www.oracle.com/security-alerts/cpuapr2022.html
- support@hackeronehttps://www.oracle.com/security-alerts/cpujan2022.html
- support@hackeronehttps://www.oracle.com/security-alerts/cpuoct2021.html
- af854a3a-2127-422b-91ae-364da2661108https://github.com/lodash/lodash/issues/4874
- af854a3a-2127-422b-91ae-364da2661108https://hackerone.com/reports/712065
- af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20200724-0006/
- af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com//security-alerts/cpujul2021.html
- af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpuApr2021.html
- af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpuapr2022.html
- af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpujan2022.html
Vendor Advisories for CVE-2020-8203(4)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2020:4298Red Hat Product SecurityMedium
Red Hat Security Advisory: OpenShift Container Platform 4.6.1 image security update
- RHSA-2020:3807Red Hat Product SecurityMedium
Red Hat Security Advisory: Red Hat Virtualization security, bug fix, and enhancement update
- RHSA-2020:3369Red Hat Product SecurityMedium
Red Hat Security Advisory: Red Hat OpenShift Service Mesh security update
- RHSA-2020:3370Red Hat Product SecurityLow
Red Hat Security Advisory: Red Hat OpenShift Jaeger 1.17.6 container images security update
Patch Availability(7)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| redhat | quay/quay-rhel8:v3.6.0-62 | 2021-10-19 | redhat |
| redhat | cockpit-ovirt-0:0.14.15-1.el8ev | 2020-12-17 | redhat |
| redhat | org.ovirt.engine-root-0:4.4.3.8-1 | 2020-11-24 | redhat |
| redhat | openshift4/ose-metering-presto:v4.6.0-202010200139.p0 | 2020-10-27 | redhat |
| redhat | ovirt-web-ui-0:1.6.4-1.el8ev | 2020-09-23 | redhat |
| redhat | distributed-tracing/jaeger-rhel7-operator:1.17.6-1 | 2020-08-06 | redhat |
| redhat | servicemesh-prometheus-0:2.14.0-14.el8 | 2020-08-06 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(8 across 2 ecosystems)
npm(7)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| lodash | — | 4.17.19 | — |
| lodash-es | — | 4.17.20 | — |
| lodash.pick | — | — | — |
| lodash.set | — | — | — |
| lodash.setwith | — | — | — |
| lodash.update | — | — | — |
| lodash.updatewith | — | — | — |
RubyGems(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| lodash-rails | 3.10.0 ... 4.6.1 (24 versions) | 4.17.19 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(3)
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
Data Freshness Timeline
(refreshed 10× in last 7d / 45× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-11 08:25 UTCEPSS rescore
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- 2026-07-02 16:57 UTCEPSS rescore
- 2026-07-01 15:03 UTCEPSS rescore
- 2026-07-01 15:01 UTCOSV refresh
- 2026-06-30 23:20 UTCEPSS rescore
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- 2026-06-13 23:13 UTCOSV refresh
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- 2026-05-29 13:42 UTCEPSS rescore
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- 2026-05-27 13:39 UTCEPSS rescore
- 2026-05-27 13:39 UTCEPSS rescore
- 2026-05-27 01:18 UTCEG score recompute
- 2026-05-27 01:18 UTCVendor advisory
- 2026-05-26 13:42 UTCEPSS rescore
- 2026-05-26 13:42 UTCEPSS rescore
- 2026-05-26 07:17 UTCEPSS rescore
- 2026-05-26 07:17 UTCEPSS rescore
- 2026-05-24 00:22 UTCOSV refresh
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Frequently asked(5)
What is CVE-2020-8203?
When was CVE-2020-8203 disclosed?
Is CVE-2020-8203 actively exploited?
What is the CVSS score of CVE-2020-8203?
How do I remediate CVE-2020-8203?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-8203
Is Your Infrastructure Affected by CVE-2020-8203?
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